Astm a 671 a 671m 16a

Designation A671/A671M − 16a Standard Specification for Electric Fusion Welded Steel Pipe for Atmospheric and Lower Temperatures1 This standard is issued under the fixed designation A671/A671M; the nu[.]

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Designation: A671/A671M−16a

Standard Specification for

Electric-Fusion-Welded Steel Pipe for Atmospheric and

This standard is issued under the fixed designation A671/A671M; the number immediately following the designation indicates the year

of original adoption or, in the case of revision, the year of last revision A number in parentheses indicates the year of last reapproval.

A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.

1 Scope*

1.1 This specification2 covers electric-fusion-welded steel

pipe with filler metal added, fabricated from pressure vessel

quality plate of several analyses and strength levels and

suitable for high-pressure service at atmospheric and lower

temperatures Heat treatment may or may not be required to

attain the desired properties or to comply with applicable code

requirements Supplementary requirements are provided for

use when additional testing or examination is desired

1.2 The specification nominally covers pipe 16 in [400

mm] in outside diameter or larger and of 1⁄4in [6 mm] wall

thickness or greater Pipe having other dimensions may be

furnished provided it complies with all other requirements of

this specification

1.3 Several grades and classes of pipe are provided

1.3.1 Grade designates the type of plate used as listed in5.1

1.3.2 Class designates the type of heat treatment performed

during manufacture of the pipe, whether the weld is

radio-graphically examined, and whether the pipe has been pressure

tested as listed in 1.3.3

1.3.3 Class designations are as follows (Note 1):

Class Heat Treatment on Pipe Radiography,

see Section

Pressure Test, see:

20 stress relieved, see 5.3.1 none none

21 stress relieved, see 5.3.1 9 none

23 stress relieved, see 5.3.1 none 8.3

40 normalized and tempered, see 5.3.3 none none

41 normalized and tempered, see 5.3.3 9 none

42 normalized and tempered, see 5.3.3 9 8.3

43 normalized and tempered, see 5.3.3 none 8.3

50 quenched and tempered, see 5.3.4 none none

51 quenched and tempered, see 5.3.4 9 none

52 quenched and tempered, see 5.3.4 9 8.3

53 quenched and tempered, see 5.3.4 none 8.3

70 quenched and precipitation heat

treated

N OTE 1—Selection of materials should be made with attention to temperature of service For such guidance, Specification A20/A20M may

be consulted.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard Within the text, the

SI units are shown in brackets The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other Combining values from the two systems may result in non-conformance with the standard The inch-pound units shall apply unless the “M” designation of this specification is specified in the order

2 Referenced Documents

2.1 ASTM Standards:3

A20/A20MSpecification for General Requirements for Steel Plates for Pressure Vessels

A370Test Methods and Definitions for Mechanical Testing

of Steel Products A435/A435MSpecification for Straight-Beam Ultrasonic Examination of Steel Plates

A530/A530MSpecification for General Requirements for Specialized Carbon and Alloy Steel Pipe

A577/A577MSpecification for Ultrasonic Angle-Beam Ex-amination of Steel Plates

A578/A578MSpecification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applica-tions

1 This specification is under the jurisdiction of ASTM Committee A01 on Steel,

Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee

A01.09 on Carbon Steel Tubular Products.

Current edition approved Dec 1, 2016 Published December 2016 Originally

approved in 1972 Last previous edition approved in 2016 as A671 – 16 DOI:

10.1520/A0671_A0671M-16A.

2 For ASME Boiler and Pressure Vessel Code applications see related

Specifi-cation SA-671 in Section II of that Code.

3 For referenced ASTM standards, visit the ASTM website, www.astm.org, or

contact ASTM Customer Service at service@astm.org For Annual Book of ASTM Standards volume information, refer to the standard’s Document Summary page on

the ASTM website.

*A Summary of Changes section appears at the end of this standard

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E110Test Method for Rockwell and Brinell Hardness of

Metallic Materials by Portable Hardness Testers

E165/E165MPractice for Liquid Penetrant Examination for

General Industry

E709Guide for Magnetic Particle Testing

2.2 Plate Steels:

A203/A203MSpecification for Pressure Vessel Plates, Alloy

Steel, Nickel

A285/A285MSpecification for Pressure Vessel Plates,

Car-bon Steel, Low- and Intermediate-Tensile Strength

Car-bon Steel, Manganese-Silicon

Steel, Double-Normalized and Tempered 9 % Nickel

Car-bon Steel, for Intermediate- and Higher-Temperature

Ser-vice

Car-bon Steel, for Moderate- and Lower-Temperature Service

Steel, High-Strength, Quenched and Tempered

Heat-Treated, Carbon-Manganese-Silicon Steel

Steel, Quenched and Tempered 7, 8, and 9 % Nickel

Low-Carbon Age-Hardening

Nickel-Copper-Chromium-Molybdenum-Columbium Alloy Steel

2.3 ASME Boiler and Pressure Vessel Code:4

Section II

Section III

Section VIII

Section IX

3 Terminology

3.1 Definitions of Terms Specific to This Standard:

3.1.1 lot—a lot shall consist of 200 ft [60 m] or fraction

thereof of pipe from the same heat of steel

4 Ordering Information

4.1 The inquiry and order for material under this

specifica-tion should include the following informaspecifica-tion:

4.1.1 Quantity (feet, metres, or number of lengths),

4.1.2 Name of material (steel pipe, electric-fusionwelded),

4.1.3 Specification number,

4.1.4 Grade and class designations (see1.3),

4.1.5 Size (inside or outside diameter, nominal or minimum

wall thickness),

4.1.6 Length (specific or random),

4.1.7 End finish (11.4),

4.1.8 Purchase options, if any (see 5.2.3 and 11.3 of this

specification See also Specification A530/A530M),

4.1.9 Supplementary requirements, if any

5 Materials and Manufacture

5.1 Materials—The steel plate material shall conform to the

requirement of the applicable plate specification for the pipe grade ordered as listed in Table 1

5.2 Welding:

5.2.1 The joints shall be double-welded, full-penetration welds made in accordance with procedures and by welders or welding operators qualified in accordance with the ASME Boiler and Pressure Vessel Code, Section IX

5.2.2 The welds shall be made either manually or automati-cally by an electric process involving the deposition of filler metal

5.2.3 As welded, the welded joint shall have positive reinforcement at the center of each side of the weld, but no more than1⁄8in [3 mm] This reinforcement may be removed

at the manufacturer’s option or by agreement between the manufacturer and purchaser The contour of the reinforcement shall be smooth and the deposited metal shall be fused smoothly and uniformly into the plate surface

5.3 Heat Treatment—All classes other than 10, 11, 12, and

13 shall be heat treated in furnace controlled to 6 25 °F [6 15

°C] and equipped with a recording pyrometer so that heating records are available Heat treating after forming and welding shall be to one of the following:

5.3.1 Classes 20, 21, 22, and 23 pipe shall be uniformly heated within the post-weld heat-treatment temperature range indicated in Table 2 for a minimum of 1 h/in [0.4 h/cm] of thickness or for 1 h, whichever is greater

5.3.2 Classes 30, 31, 32, and 33, pipe shall be uniformly heated to a temperature in the austenitizing range and not exceeding the maximum normalizing temperature indicated in Table 2 and subsequently cooled in air at room temperature

4 Available from American Society of Mechanical Engineers (ASME), ASME

International Headquarters, Two Park Ave., New York, NY 10016-5990, http://

www.asme.org.

TABLE 1 Plate Specifications

Pipe Grade Type of Steel ASTM Specification

No Grade /

Class / Type

CB 60 plain carbon, killed A515/A515M Gr 60

CC 60 plain carbon, killed, fine grain A516/A516M Gr 60

CD 70 manganese-silicon, normalized A537/A537M Cl 1

CD 80 manganese-silicon, quenched and

tempered

A537/A537M Cl 2

CJA 115 alloy steel, quenched and tempered A517/A517M Gr A CJB 115 alloy steel, quenched and tempered A517/A517M Gr B CJE 115 alloy steel, quenched and tempered A517/A517M Gr E CJF 115 alloy steel, quenched and tempered A517/A517M Gr F CJH 115 alloy steel, quenched and tempered A517/A517M Gr H CJP 115 alloy steel, quenched and tempered A517/A517M Gr P

CK 75 carbon-manganese-silicon A299/A299M Gr A CP85 alloy steel, age hardening, quenched

and precipitation heat treated

A736/A736M Gr A,

Class 3

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5.3.3 Classes 40, 41, 42, and 43 pipe shall be normalized in

accordance with 5.3.2 After normalizing, the pipe shall be

reheated to the tempering temperature indicated inTable 2as a

minimum and held at temperature for a minimum of 1⁄2 h/in

[0.2 h/cm] of thickness or for1⁄2h, whichever is greater, and air

cooled

5.3.4 Classes 50, 51, 52, and 53 pipe shall be uniformly

heated to a temperature in the austenitizing range, and not

exceeding the maximum quenching temperature indicated in

Table 2 and subsequently quenched in water or oil After

quenching, the pipe shall be reheated to the tempering

tem-perature indicated in Table 2 as a minimum and held at that

temperature for a minimum of1⁄2h/in [0.2 h/cm] of thickness

or for1⁄2h, whichever is greater, and air cooled

5.3.5 Classes 70, 71, 72, and 73 pipe shall be uniformly

heated to a temperature in the austenitizing range, not

exceed-ing the maximum quenchexceed-ing temperature indicated inTable 2,

and subsequently quenched in water or oil After quenching the

pipe shall be reheated into the precipitation heat treating range

indicated in Table 2 for a time to be determined by the

manufacturer

6 General Requirements for Delivery

6.1 Material furnished to this specification shall conform to the applicable requirements of the current edition of Specifi-cationA530/A530Munless otherwise provided herein

7 Chemical Composition

7.1 Product Analysis of Plate—The pipe manufacturer shall

make an analysis of each mill heat of plate material The product analysis so determined shall meet the requirements of the plate specification to which the material was ordered

7.2 Product Analyses of Weld—The pipe manufacturer shall

make an analysis of finished deposited weld material from each

200 ft [60 m] or fraction thereof Analyses shall conform to the welding procedure for deposited weld metal

7.3 Analysis may be taken from the mechanical test speci-mens The results of the analyses shall be reported to the purchaser

8 Mechanical Requirements

8.1 Tension Test:

TABLE 2 Heat Treatment ParametersA

Pipe GradeB

ASTM Specification and Grade / Class / Type

Post-Weld Heat-Treatment Temperature Range °F [°C]

Normalizing Temperature, max, unless otherwise noted

°F [°C]

Quenching Temperature, max, unless otherwise noted

°F [°C]

Tempering Temperature, min,

°F [°C]

Precipitation Heat Treatment Temperature Range °F [°C]

CD 80 A537/A537M (Cl 2) 1100–1250 [590–680]C

[900 ± 15] plusE

1450 ± 25 [790 ± 15]

[560–605]

[800–925]

1050–1175 [560–635]F

[900–940]

1150 [620]

[900–940]

1150 [620]

[900–940]

1150 [620]

[900–940]

1150 [620]

[900–940]

1150 [620]

[900–940]

1150 [620]

CP85 A736/A736M (A, Class 3) 1000–1175 [540–635] 1725 [940] 1000–1225

[540–665]

AWhere ellipses ({) appear in this table, there is no requirement.

B

Numbers indicate minimum tensile strength in ksi.

C

In no case shall the post-weld heat-treatment temperature exceed the mill tempering temperature.

DTempering range 1100 to 1300 [590 to 705], if accelerated cooling utilized per Specification A516/A516M

EIf hot forming is performed after heating to a temperature in the range from 1650 to 1750°F [900 to 955°C], the first normalize may be omitted.

F

Prior to the tempering treatment, the plates may be subjected to an intermediate heat treatment consisting of heating to a temperature in the range from 1165 to 1290°F [630 to 700°C] and either air-cooled or water quenched See Specification A553/A553M for hold times and cooling instructions.

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8.1.1 Requirements—Transverse tensile properties of the

welded joint shall meet the minimum requirements for ultimate

tensile strength of the specified plate material In addition for

Grades CD and CJ, when these are of Class 3x, 4x, or 5x, and

Grade CP of 7x, the transverse tensile properties of the base

plate shall be determined on specimens cut from the

heat-treated pipe These properties shall meet the mechanical test

requirements of the plate specification

8.1.2 Number of Tests—One test specimen of weld metal

and one specimen of base metal, if required by8.1.1, shall be

made and tested to represent each lot of finished pipe

8.1.3 Test Specimen Location and Orientation—The test

specimens shall be taken transverse to the weld at the end of

the finished pipe and may be flattened cold before final

machining to size

8.1.4 Test Method—The test specimen shall be made in

accordance with QW-150 in Section IX of the ASME Boiler

and Pressure Vessel Code The test specimen shall be tested at

room temperature in accordance with Test Methods and

Defi-nitionsA370

8.2 Transverse Guided Weld Bend Test:

8.2.1 Requirements—The bend test shall be acceptable if no

cracks or other defects exceeding1⁄8in [3 mm] in any direction

are present in the weld metal or between the weld and the base

metal after bending Cracks that originate along the edges of

the specimen during testing, and that are less than1⁄4in [6 mm]

measured in any direction shall not be considered

8.2.2 Number of Tests—One test (two specimens) shall be

made to represent each lot of finished pipe

8.2.3 Test Specimen Location and Orientation—Two bend

test specimens shall be taken transverse to the weld at the end

of the finished pipe As an alternative, by agreement between

the purchaser and the manufacturer, the test specimens may be

taken from a test plate of the same material as the pipe, the test

plate being attached to the end of the cylinder and welded as a

prolongation of the pipe longitudinal seam

8.2.4 Test Method—The test requirements ofA370, A2.5.1.7

shall be met For wall thicknesses over3⁄8in [10 mm] but less

than3⁄4in [19 mm] side-bend tests may be made instead of the

face and root-bend tests For wall thicknesses 3⁄4 in [19 mm]

and over both specimens shall be subjected to the side-bend

test

8.3 Pressure Test—Classes X2 and X3 pipe shall be tested in

accordance with SpecificationA530/A530M, Hydrostatic Test

Requirements

9 Radiographic Examination

9.1 The full length of each weld of Classes X1 and X2 shall

be radiographically examined in accordance with and meet the

requirements of ASME Boiler and Pressure Vessel Code,

Section VIII, Paragraph UW–51

9.2 Radiographic examination may be performed prior to

heat treatment

10 Rework

10.1 Elimination of Surface Imperfections—Unacceptable

surface imperfections shall be removed by grinding or

machin-ing The remaining thickness of the section shall be no less than

the minimum specified in Section 11 The depression after grinding or machining shall be blended uniformly into the surrounding surface

10.2 Repair of Base Metal Defects by Welding:

10.2.1 The manufacturer may repair, by welding, base metal where defects have been removed, provided the depth of the repair cavity as prepared for welding does not exceed1⁄3of the nominal thickness and the requirements of 10.2.2, 10.2.3, 10.2.4,10.2.5and10.2.6are met Base metal defects in excess

of these may be repaired with prior approval of the customer 10.2.2 The defect shall be removed by suitable mechanical

or thermal cutting or gouging methods and the cavity prepared for repair welding

10.2.3 The welding procedure and welders or welding operators are to be qualified in accordance with Section IX of the ASME Boiler and Pressure Vessel Code

10.2.4 The full length of the repaired pipe shall be heat treated after repair in accordance with the requirements of the pipe class specified

10.2.5 Each repair weld of a defect where the cavity, prepared for welding, has a depth exceeding the lesser of3⁄8in [10 mm] or 10 % of the nominal thickness shall be examined

by radiography in accordance with the methods and the acceptance standards of Section 9

10.2.6 The repair surface shall be blended uniformly into the surrounding base metal surface and examined and accepted

in accordance with Supplementary Requirements S6 or S8

10.3 Repair of Weld Metal Defects by Welding:

10.3.1 The manufacturer may repair weld metal defects if he meets the requirements of 10.2.3, 10.2.4, 10.3.2, 10.3.3 and 10.4

10.3.2 The defect shall be removed by suitable mechanical

or thermal cutting or gouging methods and the repair cavity examined and accepted in accordance with Supplementary Requirements S7 or S9

10.3.3 The weld repair shall be blended uniformly into the surrounding metal surfaces and examined and accepted in accordance with9.1and with Supplementary Requirements S7

or S9

10.4 Retest—Each length of repaired pipe of a class

requir-ing a pressure test shall be hydrostatically tested followrequir-ing repair

11 Dimensions, Mass and Permissible Variations

11.1 The wall thickness and weight for welded pipe fur-nished to this specification shall be governed by the require-ments of the specification to which the manufacturer ordered the plate

11.2 Permissible variations in dimensions at any point in a length of pipe shall not exceed the following:

11.2.1 Outside Diameter—Based on circumferential

mea-surement 6 0.5 % of the specified outside diameter

11.2.2 Out-of-Roundness—Difference between major and

minor outside diameters, 1 %

11.2.3 Alignment—Using a 10-ft [3-m] straight edge placed

so that both ends are in contact with the pipe, 1⁄8 in [3 mm]

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11.2.4 Thickness—The minimum wall thickness at any point

in the pipe shall not be more than 0.01 in [0.3 mm] under the

specified nominal thickness

11.3 Circumferential welded joints of the same quality as

the longitudinal joints shall be permitted by agreement between

the manufacturer and the purchaser

11.4 Lengths with unmachined ends shall be within −0, +1⁄2

in [−0, +13 mm] of that specified Lengths with machined ends

shall be as agreed between the manufacturer and the purchaser

12 Workmanship, Finish, and Appearance

12.1 The finished pipe shall be free of injurious defects and

shall have a workmanlike finish This requirement is to mean

the same as the identical requirement that appears in Specifi-cationA20/A20Mwith respect to steel plate surface finish

13 Product Marking

13.1 In addition to the marking provision of Specification A530/A530M, class marking in accordance with 1.3.3 shall follow the grade marking, for example, CC 70–10

13.2 Bar Coding—In addition to the requirements in13.1, bar coding is acceptable as a supplemental identification method The purchaser may specify in the order a specific bar coding system to be used

SUPPLEMENTARY REQUIREMENTS

One or more of the following supplementary requirements shall be applied only when specified by the purchaser in the inquiry, contract, or order Details of these supplementary requirements shall be

agreed upon in writing by the manufacturer and purchaser Supplementary requirements shall in no

way negate any requirement of the specification itself

S1 Tension and Bend Tests

S1.1 Tension tests in accordance with8.1and bend tests in

accordance with8.2shall be made on specimens representing

each length of pipe

S2 Charpy V-Notch Test

S2.1 Requirements—The acceptable test energies for

mate-rial shown in Specification A20/A20M shall conform to the

energy values shown in SpecificationA20/A20M

S2.1.1 Materials not listed in SpecificationA20/A20Mshall

be in accordance with the purchase order requirements

S2.2 Number of Specimens—Each test shall consist of at

least three specimens

S2.2.1 One base metal test shall be made from one pipe

length per heat per heat-treat charge per nominal wall

thick-ness For pipe from Classes 10, 11, 12, and 13, one base metal

test shall be made per heat per size and per wall thickness

S2.2.2 One weld-metal test shall be made in accordance

with UG–84 of Section VIII of the ASME Boiler and Pressure

Vessel Code

S2.2.3 One heat-affected-zone test shall be made in

accor-dance with UG–84 of Section VIII of the ASME Boiler and

Pressure Vessel Code

S2.3 Test Specimen Location and Orientation:

S2.3.1 Specimens for base-metal tests in Grades CA, CB,

and CC in the as rolled stress relieved or normalized condition

(classes of the 10, 20, 30, and 40 series) shall be taken so that

the longitudinal axis of the specimen is parallel to the

longi-tudinal axis of the pipe

S2.3.2 Base-metal specimens of quench and tempered pipe,

when the quenching and tempering follows the welding

operation, shall be taken in accordance with the provision of

N330 of Section III of the ASME Boiler and Pressure Vessel

Code

S2.4 Test Method—The specimen shall be Charpy-V Type A

in accordance with Test Methods and Definitions A370 The specimens shall be tested in accordance with Test Methods and DefinitionsA370 Unless otherwise indicated by the purchaser, the test temperature shall be as given in Specification A20/ A20M for those base materials covered by Specification A20/A20M For materials not covered by Specification A20/ A20M the test temperature shall be 10 °F [−12 °C] unless otherwise stated in the purchase order

S3 Hardness Test

S3.1 Hardness tests shall be made in accordance with Test Methods and DefinitionsA370or Test MethodE110across the welded joint of both ends of each length of pipe In addition, hardness tests shall be made to include the heat-affected zone

if so required by the purchaser The maximum acceptable hardness shall be as agreed upon between the manufacturer and the purchaser

S3.2 As an alternative to the heat-affected zone hardness, by agreement between the manufacturer and purchaser, maximum heat-affected zone hardness may be specified for the procedure test results

S4 Product Analysis

S4.1 Product analyses in accordance with7.1shall be made

on each 500 ft [150 m] of pipe or fraction thereof, or alternatively, on each length of pipe as designated in the order

S5 Metallography

S5.1 The manufacturer shall furnish one photomicrograph

to show the microstructure at 100× magnification of the weld metal or base metal of the pipe in the as-finished condition The purchaser shall state in the order: the material, base metal or weld, and the number and locations of tests to be made This test is for information only

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S6 Magnetic Particle Examination of Base Metal

S6.1 All accessible surfaces of the pipe shall be examined in

accordance with Guide E709 Accessible is defined as: All

outside surfaces, all inside surfaces of pipe 24 in [600 mm] in

diameter and greater, and inside surfaces of pipe less than 24

in [600 mm] in diameter for a distance of 1 pipe diameter from

the ends

S6.2 Acceptance Standards—The following relevant

indica-tions are unacceptable:

S6.2.1 Any linear indications greater than1⁄16 in [1 mm]

long for materials less than5⁄8in [16 mm] thick; greater than

1⁄8in [3 mm] long for materials from5⁄8in [16 mm] thick to

under 2 in [50 mm] thick; and greater than3⁄16in [5 mm] long

for materials 2 in [50 mm] thick or greater

S6.2.2 Rounded indications with dimensions greater than1⁄8

in [3 mm] for thicknesses less than5⁄8in [16 mm], and greater

than3⁄16in [5 mm] for thicknesses5⁄8in [16 mm] and greater

S6.2.3 Four or more indications in any line separated by1⁄16

in [1 mm] or less edge-to-edge

S6.2.4 Ten or more indications in any 6 in.2[39 cm2] of

surface with the major dimension of this area not to exceed 6

in [150 mm] when it is taken in the most unfavorable

orientation relative to the indications being evaluated

S7 Magnetic Particle Examination of Weld Metal

S7.1 All accessible welds shall be examined in accordance

with GuideE709 Accessible is defined as: All outside surfaces,

all inside surfaces of pipe 24 in [600 mm] in diameter and

greater, and inside surfaces of pipe less than 24 in [600 mm]

in diameter for a distance of one pipe diameter from the ends

S7.2 Acceptance Criteria—The following relevant

indica-tions are unacceptable:

S7.2.1 Any cracks and linear indications

S7.2.2 Rounded indications with dimensions greater than

3⁄16 in [5 mm]

S7.2.3 Four or more indications in any line separated by1⁄16

in [1 mm] or less edge-to-edge

S7.2.4 Ten or more indications in any 6 in.2[39 cm2] of

surface with the major dimension of this area not to exceed 6

in [150 mm] when it is taken in the most unfavorable

orientation relative to the indications being evaluated

S8 Liquid Penetrant Examination of Base Metal

accordance with Test Method E165/E165M Accessible is as

defined in S7.1

S8.2 The acceptance criteria shall be in accordance with

S6.2

S9 Liquid Penetrant Examination of Weld Metal

accordance with Test Method E165/E165M Accessible is as

defined in S7.1

S9.2 The acceptance criteria shall be in accordance with S7.2

S10 Straight Beam Ultrasonic Examination of Flat Plate—UT 1

S10.1 The plate shall be examined and accepted in accor-dance with Specification A435/A435Mexcept that 100 % of one surface shall be scanned by moving the search unit in parallel paths with not less than 10 % overlap

S11 Straight Beam Ultrasonic Examination of Flat Plate—UT 2

S11.1 The plate shall be examined in accordance with Specification A578/A578Mexcept that 100 % of one surface shall be scanned and the acceptance criteria shall be as follows: S11.1.1 Any area, where one or more discontinuities pro-duce a continuous total loss of back reflection accompanied by continuous indications on the same plane that cannot be encompassed within a circle whose diameter is 3 in [76.2 mm]

or one half of the plate thickness, whichever is greater, is unacceptable

S11.1.2 In addition, two or more discontinuities on the same plane and having the same characteristics but smaller than described above shall be unacceptable unless separated by a minimum distance equal to the largest diameter of the larger discontinuity or unless they may be collectively encompassed

by the circle described above

S12 Angle Beam Ultrasonic Examination (Plate Less than 2 in [50 mm] Thick)—UT 3

S12.1 The plate shall be examined in accordance with Specification A577/A577M except that the calibration notch shall be vee shaped and the acceptance criteria shall be as follows: Any area showing one or more reflections producing indications whose amplitude exceeds that of the calibration notch is unacceptable

S13 Repair Welding

S13.1 Repair of base metal defects by welding shall be done only with customer approval

S14 Description of Term

S14.1 lot—all pipe of the same mill heat of plate material

and wall thickness (within 61⁄4in [6 mm]) heat treated in one furnace charge For pipe that is not heat treated or that is heat treated in a continuous furnace, a lot shall consist of each 200

ft [60 m] or fraction thereof of all pipe of the same mill heat of plate material and wall thickness (within 61⁄4 in [6 mm]), subjected to the same heat treatment For pipe heat treated in a batch-type furnace that is automatically controlled within a 50

°F [30 °C] range and is equipped with recording pyrometers so that heating records are available, a lot shall be defined the same as for continuous furnaces

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SUMMARY OF CHANGES

Committee A01 has identified the location of selected changes to this specification since the last issue, A671–16, that may impact the use of this specification (Approved December 1, 2016)

(1) Revised 8.2.4

Committee A01 has identified the location of selected changes to this specification since the last issue, A671–14, that may impact the use of this specification (Approved May 1, 2016)

(1)Table 1 revised to identify specific pipe grades of A203/

A203M

(2)Table 2 revised to identify specific pipe grades of A203/

A203M, A517/A517M, and ASTM Specification Grade for

A299/A299M

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in this standard Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk

of infringement of such rights, are entirely their own responsibility.

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if not revised, either reapproved or withdrawn Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

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